CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
ASSETS
Securities held to maturity, fair value	$ 54,004	$ 62,827
Stockholders' Equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	12,233,424	12,123,179
Common stock, shares outstanding (in shares)	12,233,424	12,123,179
Series A Preferred Stock [Member]
Stockholders' Equity:
Preferred stock, shares issued (in shares)	437,500	437,500
Preferred stock, shares outstanding (in shares)	437,500	437,500
Preferred stock, liquidation preference	$ 3,500	$ 3,500